Allen78

Im new here and just got my first corvette a 84 with 74k miles. Found out i has a bad crank from a spun bearing. I just bought a 86 that's in need of some serious repairs but motor is good. Can i put the 86 motor in my 84 and what can i keep on it? I know i will have to switch the intake.

My first corvette 84





Needs some love to the interior

Tom400CFI

The '86 long block (block, w/rotating assy, heads and valve train) should bolt right into your '84, and your '84 intake should bolt right on to the '86 long block.

Allen78

Thats what I was wondering but could not find any one around here that could tell me. Thanks

I found out my 84 was born 11/83 and the 86 i got for a parts car was born 12/85

playsdixie

nice looking car....some new seat covers and a little carpet shampoo and your interior will look fine....welcome to the forum

mtwoolford

are both engines one piece rear seal engines ? or is the 84 a two piece rear seal ?

Allen78

Parts store shows a 2 pice for the 84 and a one pice for the 86

ghoastrider1

you may have lucked out, the late 86 engines have alum. heads.

antfarmer2

Take a look at my leather seat cover thread $249 for both.

Tom400CFI

Easily solved; Get the '86 flex plate or flywheel.

ex-x-fire

If you don't like the stiff riding 84, swap out the springs too.

Cliff Harris

If the build date is 12/85 then the '86 has cast iron heads.

All '86s have a one piece rear main seal.

I would put the whole '86 engine in with the TPI intake. Make sure you use the '86 ECM.

Tom400CFI

I would be very careful with that plan, depending on future mods. I'd only do the intake swap if keeping everything stock going forward.

DinoBob

Last 5 digits of the 1986 VIN please. Mine is also a 1986 with a 12/85 date.

Allen78

I was wondering about doing a tpi upgrade but not sher of how to do it. Herd it can be a headache to get right.

H P Bushrod

That's what I'd do. Keep it simple...no need to create headaches. BTW, Nice '84 brother! Congrats!

Allen78

17095 is the last 5

Allen78

Thanks

Allen78

What all can i switch off the 86 and put on my 84 to improve it

crowz

You can just swap the 86 motor in and get the harness and computer from the 86 car and install it in the 84 car. Its a simple swap actually.

Allen78

Im going to keep the crossfire setup i just found the rampage intake for $540